Smaller timeseries partitions

[nmerket]

Pull Request Description

The output partition size of 4GB was making downstream data processing difficult. Both spark and dask clusters were failing due to out of memory errors. I'm changing it back to 1GB, which will make more files, but each will be more manageable.

Checklist

Not all may apply

• Code changes (must work)
• Tests exercising your feature/bug fix (check coverage report on CircleCI build -> Artifacts)
• All other unit tests passing
• Update validation for project config yaml file changes
• ~~ Update existing documentation~~
• Run a small batch run to make sure it all works (local is fine, unless an Eagle specific feature)
• Add to the changelog_dev.rst file and propose migration text in the pull request

[rajeee]

Looks like another case of "unintended consequences" :)
This will probably make the upload time a little worse, but nothing too bad.